package com.wl.blog.web.admin;

import com.wl.blog.po.Blog;
import com.wl.blog.po.User;
import com.wl.blog.service.BlogService;
import com.wl.blog.service.TagService;
import com.wl.blog.service.TypeService;
import com.wl.blog.vo.BlogQuery;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;


@Controller
@RequestMapping("/admin")
public class BlogController {

    private static final String INPUT = "admin/blogsInput";
    private static final String LIST = "admin/blogsManager";

    //redirect是重定向路由 即controller上路径
    private static final String REDIRECT_LIST = "redirect:/admin/blogs";

    @Autowired
    private BlogService blogService;

    @Autowired
    private TypeService typeService;

    @Autowired
    private TagService  tagService;


    @GetMapping("/blogs")
    public String blogs(@PageableDefault(size = 2,sort = {"updateTime"}, direction = Sort.Direction.DESC)
                                    Pageable pageable, BlogQuery blog, Model model) {

        model.addAttribute("types",typeService.listType());
        model.addAttribute("page",blogService.listBlog(pageable,blog));
        return LIST;
    }

    @PostMapping("/blogs/search")
    public String search(@PageableDefault(size = 2,sort = {"updateTime"}, direction = Sort.Direction.DESC)
                                Pageable pageable, BlogQuery blog, Model model) {
        model.addAttribute("page",blogService.listBlog(pageable,blog));
        return "admin/blogsManager :: blogList";
    }


    @GetMapping("/blogs/input")
    public String input(Model model) {
        setTypeAndTag(model);
        model.addAttribute("blog",new Blog());
        return INPUT;
    }


    @GetMapping("/blogs/{id}/input")
    public String editInput(@PathVariable Long id, Model model) {
        setTypeAndTag(model);
        Blog blog = blogService.getBlog(id);
        blog.init();
        model.addAttribute("blog",blog);
        return INPUT;
    }

    private void setTypeAndTag(Model model) {
        model.addAttribute("types",typeService.listType());
        model.addAttribute("tags",tagService.listTag());
    }


    @PostMapping("/blogs")
    public String post(Blog blog, RedirectAttributes attributes, HttpSession session){
        blog.setUser((User)session.getAttribute("user"));
        blog.setType(typeService.getType(blog.getType().getId()));
        blog.setTags(tagService.listTag(blog.getTagIds()));
        Blog  b;
        if(blog.getId() == null) {
            b = blogService.saveBlog(blog);
        }else {
            b = blogService.updateBlog(blog.getId(), blog);
        }
        if (b == null){
            attributes.addFlashAttribute("message","新增失败");
        } else {
            attributes.addFlashAttribute("message","新增成功");
        }

        return REDIRECT_LIST;
    }

    @GetMapping("/blogs/{id}/delete")
    public String delBlog(@PathVariable Long id, RedirectAttributes attributes) {
        blogService.deleteBlog(id);
        attributes.addFlashAttribute("message","删除成功");
        return REDIRECT_LIST;
    }

}
